VEGA VEGAPULS 67 (≥ 2.0.0 - ≥ 4.0.0) Profibus PA - Manual (Page 22)

22
4 Mounting
VEGAPULS 67 • Profibus PA
36533-EN-121011
Information:
Keep in mind that for these applications, the sensors are designed
for relatively slow level changes. If the sensor is used on a movable
boom, the max. measuring rate must be observed (see chapter
"Technical data").
Fig. 19: Radar sensors on traverse crane
The mounting location of the radar sensor should be a place where no
other equipment or fixtures cross the path of the microwave signals.
Vessel installations, such as e.g. ladders, limit switches, heating spi-
rals, struts, etc., can cause false echoes and impair the useful echo.
Make sure when planning your measuring site that the radar sensor
has a "clear view" to the measured product.
In case of existing vessel installations, a false echo storage should be
carried out during setup.
If large vessel installations such as struts or supports cause false
echoes, these can be attenuated through supplementary measures.
Small, inclined sheet metal baffles above the installations scatter the
radar signals and prevent direct interfering reflections.
Fig. 20: Cover smooth profiles with deflectors
If there are agitators in the vessel, a false signal suppression should
be carried out with the agitators in motion. This ensures that the
interfering reflections from the agitators are saved with the blades in
different positions.
Vessel installations
Agitators